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Details for Benchmark: GR0162

N 36° 45.433 W 114° 14.067 (NAD 83)

Altitude: 1696.6

Coordinates may not be exact. Altitude is ADJUSTED and location is SCALED. (more info)

Location:
In CLARK county, NV View Original Datasheet
Designation:
T 137
Marker Type:
survey disk
Setting:
set into the top of a round concrete monument
Stability:
May hold, but of type commonly subject to surface motion.

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Also found nearby cache

N 36° 45.440 W 114° 14.079

Recovered in good condition.

[Photos:]
photoT 137 along old hwy 91 near Mesquite, NV

Benchmark recovered as described, in good condition.

Recovered

[Photos:]
photoWith the witness post.

Documented History (by the NGS)

01/01/1957 by NVDH (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1957 11.2 MI W FROM MESQUITE. 10.15 MILES WEST ALONG U.S. HIGHWAY 91 FROM THE POST OFFICE IN MESQUITE, THENCE SOUTH 1 MILE IN RIVERSIDE ROAD TO JUNCTION OF ABANDONED HIGHWAY 91, 0.05 MILE SOUTHEAST OF JUNCTION, 50 FEET SOUTH OF CENTER LINE OF RIVERSIDE ROAD, SET IN TOP OF LARGE CONCRETE POST FLUSH WITH SURFACE OF GROUND. STAMPED DIST STA T-49 + 61.97 PT STA A-98 + 68.31 POT ANGLE 90 O T 137 1957.
01/01/1957 by NGS (GOOD)
01/01/1982 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1982 RECOVERED IN GOOD CONDITION. NEW DESCRIPTION FOLLOWS. 12.75 KM (7.95 MI) SOUTHWEST ALONG STATE HIGHWAY 170 FROM THE JUNCTION OF MAIN STREET IN BUNKERVILLE, 1.5 KM (0.95 MI) SOUTH OF THE JUNCTION OF INTERSTATE 15, 0.1 KM (0.05 MI) SOUTHEAST OF THE Y JUNCTION OF THE ABANDON HIGHWAY 91, AT THE SOUTHEAST END OF A CURVE, 15.2 METERS (50 FT) SOUTHWEST OF THE HIGHWAY CNETERLINE, 48.2 METERS (158 FT) SOUTHWEST ACROSS THE HIGHWAY FROM BM U 137 NHD. THE MARK IS 0.2 M BELOW THE HIGHWAY.
01/01/1982 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1982 RECOVERED IN GOOD CONDITION.
10/07/1995 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1995 RECOVERED IN GOOD CONDITION.

Control Text

  • The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
  • The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991.
  • The geoid height was determined by GEOID99.
  • The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (G = 980.6199 gals.).
  • The modeled gravity was interpolated from observed gravity values.

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